1. Arndt, H. 1993. Rotifers as predators on components of the microbial web (bacteria, heterotrophic flagellates, ciliates): A review. Hydrobiologia 255 /256: 231–246.
2. Azam, F., T. Fenchel, J. G. Field, J. S. Gray, L. A. Meyer-Reil, and F. Thingstad. 1983. The ecological role of water-column microbes in the sea. Marine Ecology Progress Series 10: 257263.
3. Benndorf, J. and U. Miersch, 1991. Phosphorus loading and efficiency of biomanipulation. Verhandulungen International Vereingen Limnologische 24: 2482–2488.
4. Bennett, S. J., R. W. Sanders, and K. G. Porter. 1990. Heterotrophic, autotrophic, and mixotrophic nanoflagellates: Seasonal abundances and bacterivory in a eutrophic lake. Limnology and Oceanography 35: 1821–1832.
5. Bird, D. F. and J. Kalff. 1986. Bacterial grazing by planktonic algae. Science 231: 493–495.